Improvement in oil-feeders



UNITED STATES PATENT OEEICE.

ELIPHALET S. SORIPTURE, OF SYRAOUSE, NEW YORK.

IMPROVEMENT IN OILFEEDERS.

i Specification forming part of Letters Patent No. 3.952, dated March15, 1845.

provement in Oil-Cans, Ste., which I denominate the Pneumatic Oiler77 orSyringe 5 and I do hereby declare that the following is a full, clear,and exact description thereof, reference being had to the accompanyingdrawings, which make a part of the saine7 in which- Figure l is anoutside view. Fig. 2 is a vertical section through the center.

I form my oil-can, c, conical, as shown in Fig. 1, with a small tube, b,projecting from the apex thereof, and anopening, c, in the side to ll itthrough, which can be stopped airtight, as in the figure; or it may beof any convenient shape, such as is used in oiling machinery, orsyringe-formed. In the interior ofthe can, as above described, a spiralspring is put, as represented at d in Fig. 2. This is fastened by anyconvenient mode to the bottom, and bea-rs against the apex of the coneabove named, so as to press the bottom out as far as the tin or otherthin substance of which it is formed will allow.

The .operation of the 'above-described instrument is as follows: Whenlled and the aperture c is stopped, if itis turned with the.

tube b downward, none of the oil or other liquid will escape; but if apressure is applied to the bottom sufficient to force it inward, some lof the oil will be forced our in such quantities as are required, andwhen the pressure is removed there is an equivalent amount of air drawnup, caused by the spring d forcing out the bottom, and causing a vacuumwithin. This may be repeated as long` as the oil lasts. It will beobvious that other springs might be used; but I prefer the spiral one.

What I claim in the above-described instrument, and desire to secure byLetters Patent, is-

The combination of the spring with the oilcan or syringe, substantiallyin the manner, and for the purpose above described.

ELIPHALET s. scEIPTURE Witnesses:

J. J. GEEENQUGH, LAFAYETTE CALDWELL.

